Trolley bridge



Dec. 2, 1930. R. H. GREEGQR 1,783,710

TROLLEY BRIDGE Filed Dec. 30, 192"! 2 Sheets-Sheet l 43 Q Ii.

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i 0 i7 i6 19 37 24 i 2 26 31weutor RALPH H.GREEGOR G ttomeg Dec. 2,1930.

R. H. GREEGOR 1,783,710

TROLLEY BRIDGE Filed Dec. 30, 1927 2 Sheets-Sheet 2 Zinventor RALPHH.GREEGOR attorneys further raised, or, "to say normal position and thebridge in bridging positlon.

Fig. 3 1s a detail View, on a larger scale, ot

' RALPH H.

Patented Dec. 2, 1930 GREEQGOR, I013 ootni nusgomo, AssIeNo R'ro THEKINNEAR MANUF ACT U R- ING COMPANY; OF CQL'UMBUS, OHIO,-A.CORPOBATION OFOHIO Applieatiloii filed imcm er'so, 1927.,s ria1 M24314 Thisinventionlrelates to bridges for? the trolleys of electrically propelledvehlcles a'nd is especially'uselul infco'nnection with street -1--.;i1wa I c ar barns equipped with rolling doors. .The principalobject'ofthe invention, [istoprovide an improved'construction where- ,bywhen the'dooris rolledup to its normally open position thebridge isplaced ini'ts tune. tioning positionandflwhen the door '1"sj'sufliciently unrolled from its norinal positionthe bridge isreniovedfronibridging position; or

f'generallythe position of'thedoor autoinatijcally controls thepositio'nof{the'bridge. "\Other-objects of tlie inve .15

'frolnfthe disclosurehere'in; 1

The invention embodied i i-the example herein shown and "described; thefeatures of novelty being finally claimed.

line VI-VI Fig. 4.

VIIVII Fig. 4..

lathe e el pa yinsid a s Figure 1* 's transverse vertical.sectionthrough'the walland lintel of a car barn doorway showing theinvention applied thereto with the rolling doorabout to raise thetrolley bridge to its. bridging p-ositlon.

Fig. 2 is a similar view showing the door the bridge and the seat forits free end, the parts being in the position shown in Fig.1. Fig. 4 isa similar'view, the parts being in the position shown in Fig. 2. I

Fg. 5 is a plan View of the parts as seen in Fig.4l. V V Fig. 6 is asection on a larger scaleon the Fig. 7 is a similar section on the lineFig. 8 is a detail on a larger scale of the trolley wire and by passwire connections with the track section.

In the views 10design'ates the lintel of a car barn doorway there beinginstalled in the ible rolling door 11 adapted to. be wound up andunwound from a roller or shaft 12 mountedin supporting end bracketslikethatfat 13, as usual in such structures and now in i h 100111111011use. In the present instance, however, the bottom bar 14 of the doorhassecured '23 set 'in'jthe siXty degrees to the bridging 'als ogsecuredto. said shaftis'ja weight 26,*a 'partjof-which'can be made-oflead'seoured to fa part of harderiinaterial," said weight" havw ing its1 center of "gravity" about to a tril iping' lug 15 of suifi'cientg-width placed tostrikean arin or trip connected with thebridgelwhen the door is raised, the bridge itself being struck by thebottom bar toremove'it fro n bridging position whenfthe door is loweredas will hereinafter further appear.

The trolley wire or power-line :has terminals 16 and '17 externally andinternally re spective'ly of the' barnthat are electrically connected bya line 18 icarr ied upward I through the rolling door and momentum ofthe car is relied on to carry the; trolley under the lintel and acrossthe bridge. 'j

Between theterinin'als 16]and 17 of the trolley wire are suitablysupported insulated trolley track sections-wand 20 of wood, seatedin'wooden bodies, as 21.21% the former at wall; of the building abovethe thelowerend of a bracket 22 secured to the inne'r side ofthebuilding wall and the latter "bysu t bb bolts to thelin'tel member gupportedby .a ac

interior and 'exterior' tracksections 19-"an'd 20. Oneen'd of the shaftofi'said pivoted bridging ember hassecuredto it"a trip 'arm 25 standing"at an "angle of, approximately ninety degrees fromthej trip arm so;that said bridgin'g Irneniberfcan be thrown to stand yield 7 "ingly in apoised vertical position as; shown j. inFigl-"lor in anunpoisedThoriz'ontalposition as shown in Fig.2, a suitable stop being prvided to hold the bridgingi nember in said "horizontal position. 'end ofthe bridging The stop for the free member when in horizon tal positionis asocketed inetallicjpiece in'g member-is held infpoised verticalposiwooden'body Qli-is the track- Ime'n'iber 24C for bridging thegap'betweerithe member; 7 and I '27 bol'ted to the wooden base 21. Thebridg wall above said lintel at its inner side a flexarm 25 ciently tothe opposite side of the vertical line of the axis of the bridgingmember the latter member is thrown into bridging position. In this lastdescribed position of the bridging member it'is alined with the tracksections 19 and 20 and the car trolley can ride, by momentum of the caron, and be guided by, said bridging member from one terminal of thetrolley wire into or out of the barn and onto the other terminal of thetrolley wire from which propelling current is again taken. hen the dooris lowered the bottom bar thereof strikes the bridging member and swingsit downward suiiiciently to permit it to assume the vertical position orapproximately as indicated in Fig. 1. The bridging member, and its stop,which are shown as of metal are, of course, insulated from the trolleywires.

The forms of the parts can be changed without departing from the gist ofthe invention as claimed.

What I claim is:

1. In combination with a structure having an opening, a door for saidopening adapted to be raised and lowered, an electric power line havingterminals at each side of the plane of movementof said door, a pivot ednon-conducting trolley bridging member between said terminals, means onsaid door for causing said bridging member to'assume trolley-guidingposition when the door is raised to normally open position and forremoving said bridging member from that position when the door islowered from normal raised position and a weight operating on thebridging member for holding it in bridging position independently of thedoor.

2. In combination witha building having a door opening and door guidingmeans, a door movable in said guiding means for opening and closing saiddoor opening, an electric power line having terminals at opposite sidesof the plane of movement of said door, a trolley bridging member pivotedto the building at one side of the door opening to bridge the spacebetween said terminals and across the plane of movement of the door, anarm operatively connected with said bridging member for actuatingi thebridging member, said arm being shorter than the bridging member andlocatedwholly at one side of the plane of movement of the door, means onsaid door for actuating said arm to cause the bridging member to assumetrolley guiding position. when the door is moved to normally openposition and for actuating said bridging member to remove it frombridging position when the door is moved from normally open position,and a weight connected with the bridging member 'member on the door whenthe latter is moved from closed position to normally open position.

3. In combination with a building having a door opening and door guidingmeans, a door movable in said guiding means for opening and closing saiddoor opening, an electric power line having terminals at opposite sidesof the plane of movement of said door, a trolley bridging member pivotedto the building at one side of the door opening to bridge the spacebetween said terminals and across the plane of movement of the door, anarm operatively connected with said bridging member for actuating thebridging member, said arm being shorter than the bridging member andlocated wholly at one side of the plane of movement of the door, meanson said door for actuating said arm to cause the bridging member toassume trolley guiding position when the door is moved to normally openposition and the arm-actuating means thereon beyond said arm, and foractuating'said bridging member to remove it from bridging position whenthe door is moved from normally open position, and a weight connectedwith the bridging member for holding it in bridging positionindependently of the door and also adapted to hold the bridging memberand said actuating arm in position for actuation by the actuating memberon the door when the latter is moved from closed position to normallyopen position.

RALPH H. GREEGOR.

for holding it in bridging position independently of the door and alsoadapted to hold the bridging member and said actuating arm in positionfor actuation by the actuating

